Richard joined in the Barons' letter to the
Pope in 1246 against the exactions of the
Curia in England. He was among those in opposition to the King's half-brothers, who in 1247 visited England, where they were very unpopular, but afterwards, he was reconciled to them. In August 1252/3 the King crossed over to
Gascony with his army, and to his great indignation, Richard refused to accompany him and went to Ireland instead. In August 1255 the king sent him and John Maunsel to
Edinburgh to find out the truth about reports which had reached the King that his son-in-law,
Alexander III, King of
Scotland, was being coerced by Robert de Roos and
John Balliol. They were to try to bring the young King and Queen to him. The Earl and his companion, pretending to be the two of Roos's knights, obtained entry to
Edinburgh Castle, and gradually introduced their attendants, so that they had a force sufficient for their defence. They gained access to the Scottish Queen, who complained to them that she and her husband had been kept apart. They threatened Roos with dire punishments, so that he promised to go to the King. Meanwhile, the Scottish
magnates, indignant that their castle of Edinburgh was in English hands, proposed to besiege it, but they desisted when they found they would be besieging their King and Queen. The King of Scotland apparently travelled south with Richard, for on 24 September they were with
King Henry III at Newminster,
Northumberland. In July 1258 he fell ill, supposedly poisoned together with his brother William by his steward, Walter de Scotenay. He recovered, but his brother died. ==Death and legacy==